Using a large Sharpie (TM) permanent marker to draw on large sheets of packing paper. This is full of somewhat planned as it sounds like someone briefly writing a few words.

All samples in this set were recorded on a hollow, injection-molded, plastic table, which periodically adds a hollow thump if anything is dropped. Noise reduction applied to remove systemic hum, which leaves some artifacts if amplified greatly. Some samples are normalized to -0.5 dB, while others are not.